Adjustable gas-check.



No. 7|4,454. Patented Nov. 25, i900.

` M. D. CMPTUN;

ADJUSTABLE GAS CHECK.

(Application med Apr. 24, 1902.)

UNITED STATES PATENT FFICE.

MELVIND. COMPTON, OF NEW YORK, N. Y., ASSIGNOR TO BALL CHECK LIGHT `COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

ADJUSTABLE GAS-CHECK.

SPECIFICATION forming part of Letters Patent N o. 714,454, dated November 25, 19'02.

Y Application filed April 24, 1902. Serial No. 104,436. (No model.)

. To a/ZZ whom t may concern:

Be it known that I, MELVIN D. COMPTON, a citizen of the United States, residing at New York city, in the county and State of New 1 5` York, have invented certain new and useful Improvements in Adjustable Gas-Checks, of which the following is a specification.

One object of the present invention is to provide for obtaining practically the maximum Io efficiency in the application of gas to so-called zo vide means whereby natural gas under commercial conditions can be satisfactorily employed in incandescent gas-lighting.

Another object of the invention is to obviate the employment of diminutive openings 2 Qsuch as are used in needle-valves and such as are subject to becomi-ng clogged.

Other objects ofthe invention will appear from the .following description.

To these and other ends hereinafter set `3o forth the invention comprises the improvements to be `presf-:antly described and finally claimed.

The nature, characteristic features, and

scope of the invention will be more fully un- 3 5 derstood from the following descriptiomtaken in connection with the accompanying draw ings, forming part hereof, and in which- Figure lis anelevational view showing a t mixing-tube equipped with an adjustable gas- `4o` check embodying features of the invention.

Fig. 2 is a central sectional view drawn to an enlarged scale and illustrating the parts of a fgas-check embodying features of the invention. Fig. 3 is an elevational view, and Fig.

i 45 Atis a plan view, of the gas-check shown in Fig. 2. Fig. 5 is a top or plan view of the baseof the apparatus which is shown at the lo'werpart of Fig. 2. Fig. 6 is a view, principally in section, illustrating a gas-check t 5oembodying a modification of the invention;

and Figs. 7 and 8 are views illustrating representative forms of bodies which may be used in connection with the gas-check.

In a device embodying features of the invention and with reference to the drawings, 55 more particularly to Figs. l to 5, there is a base l, adapted for application to a gas-pipe or to the fitting which is usually provided on gas-fixtures and by which the burners are applied to them, and there is a part 2, which is 6o movable in respect tothe part 1-as, for example, by having screw-and-thread connection with it-and by movable is meant movement up and down, or, in other words, the part2 can be raised and lowered in respect 65 to the part 1. The part 2 is fitted with a seat 3, and the internal edge of this seat, which is designated by the reference-line from 3, is sharp. As shown, this is accomplished by cutting off the part 2 at right angles with its 7o axis; but such expedient is not necessary, the object being to have the edge 3 of the seat sharp for a purpose that will be described. p

4 is a body, the form of which may he va- 75 y riously modified, examples of such modications being shown in Figs. 7 and 8. This body cooperates with the seat'S, and in obtaining the best results up to the present time I have employed a body which extends 8o substantially above and below a horizontal plane passed through its center of figure, or, in other words, a body of spherical or generally spheroidal or ovoid shape. As shown, the body 4 is connected with a pillar or sup- 85 port, which extends up from a spider 6, carried by the base l. The mixing-tube 7, of which the form may be widely varied, is mounted above the gas-check, as shown in Fig. 1, and it may have air-inlets 8 of suffi- 9o cient size to introduce as Amuch air as the incoming gas and other conditions can possibly consume.y In fact, I have attained up to this time the best results by not attempting to control the quantity of the incoming air, but 95 simply to be sure that there is an opportunity for as much air to come in as could possibly be used. It Will be observed that there is a free space in the air-mixing tube 7 above the body 4E. In other words, there is a clearance roo at that part of the apparatus, so that the passage of the air and gas or the mixture thereof is absolutely unobstructed above the body 4. By shifting the collar 2 upward or downward, or, in other Words, by raising or lowering it, the size of the opening, which in this case is annular and which is between the body 4 and the edge 3 of the seat, is increased or diminished, and thus the supply of gas is increased or diminished. Obviously the incoming gas is introducedinto the mixing-tube in the form of a very thin sheet, and this thin sheet travels up around the central horizontal zone of the body, and in doing so is spread and draws in advantageously a supply of air, for example, through the air-inlets S. The portion of the body above its central zone when present serves to prevent this cylindrical sheet of gas from curling in over the top of the body. The incoming gas is spread, entering as a sheet of generally cylindrical or conical form, and thus not only advantageously draws in the air, but also becomes thoroughly mixed with it, thus insu ring efciency of the burner. The fact that the edge 3 of the seat is sharp permits the gas to escape by it with a minimum of friction and loss of pressure. Y Thus the available pressure of the gas is substantially preserved and not lost by friction and other causes.

The construction and mode of operation of the modification of the invention illustrated in Fig. 6 are substantially as have been described, with the exception that the collar 9 is mounted upon the outside of the base lO, and the support ll for the body is connected with the collar and spans the base.

It will be obvious to those skilled in the art to which the invention relates that modiications may be made in details without departing from the spirit thereof. Hence I do not limit myself to the precise construction and arrangements of parts hereinabove set forth, and illustrated in the accompanying drawings; but,

Having thus described the nature and objects of the invention, what I claim as new, and desire to secure by Letters Patent, is-

l. Acombinedspreaderandadjustablegascheck comprising an internally-sharp-edged seat, a generally spheroidal part adapted to said seat, a support connected with and extending downward from said spheroidal part for positively adjusting it in respect to said seat, and means for relatively raising and lowering one of said elements to regulate the flow of gas, substantially as described.

.2. Acombined spreaderandadjustablegascheck comprising an internally'- cylindrical sharp-edged seat, a generally spheroidal part adapted to said seat, and positive means for shifting one of said elements in respect to the other to regulate the flow of gas, substantially as described.

3. A combined spreader and adjustable gascheck comprising an internally-cylindrical seat, a generally spheroidal part, a support connected with and extending downward from said spheroidal part for positioning it above and in proximity with the seat, and means for raising and lowering one of said elements, in respect to the other to regulate the flow of gas, substantially as described.

4.. A combined spreader and adjustable gascheck comprising an internally-cylindrical sharp-edged seat, a generally spheroidal part arranged above and in proximity with the seat, and means for holding said spheroidal part captive and for shifting one of said elements in respect to the other to regulate the iow of gas, substantially as described.

A combined spreader and adjustable gascheck comprising a cylindrical gas-tube having a sharp discharge edge which constitutes a seat, a captive spheroidal part above and in proximity with said seat, and means for raising and lowering the one in respect to the other to regulate the supply of gas, substantially as described.

6. In combination, a gas-tube and collar, a screw-thread connection interposed between them whereby they are movable in respect to each other, a seat carried by one of said parts, a check and spreader arranged above and in proximity with the seat, a device extending downward from the check and spreader and connected with one of said movable parts,

and an air-mixing tube mounted above said parts and provided with air-inlet openings and surrounding said device, substantially as described.

7. In combination, a base, a part capable of being raised and lowered on the base and provided with a seat, a support extending up from the base through said seat, and acheck and spreader detachably connected with said support, substantially as described.

8. In combination, a base, a part capable of being raised and lowered on the base and provided with a seat, a support extending up from the base through the seat, and a check and spreader connected with said support, substantially as described.

9. The combination with a gas-tube the mouth of which constitutes a seat, of a generally spheroidal check and spreader adapted to said seat, and means for effecting a positive adjustment of said check and spreader in respect to said seat to regulate the I'low of gas, substantially as described.

In testimony whereof I have hereunto signed my naine.

MELVIN D. COMPTON.

In presence of- K. M. GILLIGAN, W. J. JAoKsoN.

IOO

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